class_docstr: Provides Lidstone-smoothed scores.
  
  In addition to initialization arguments from BaseNgramModel also requires
  a number by which to increase the counts, gamma.
code: def __init__(self, gamma, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self.gamma = gamma
  
imports: from nltk.lm.api import LanguageModel, Smoothing
  from nltk.lm.smoothing import AbsoluteDiscounting, KneserNey, WittenBell
label_desc: Use image node_id 1 to create a new Lidstone object from inherited base classes: LanguageModel with example: obj = Lidstone(gamma)